Process of manufacturing stable pavements



June 1 1926.' I 1,586,674

E. HRTEL PROCESS OF MANUFACTURING STABLE PAVEMENTS Filed July 26, 1922 :ist

Patented June .1, 1926.

UNITED STATES lPA'EEbVl" OFFICE.

nun. HAMEL, or ooswrer, GERMANY.

PROCESS 40F MANUFACTURING STALE EAVEMENTS.

Application led .Tu1y 26, 1922, Serial No. 577,706, and in Germany November 22, 1921.

The'object of my invention is to furnish a practical and durablev stable pavement, and it consists of two layers, of an isolating,

'elastic lower layer made of impregnated,

5 crushed cork and .av water-shedding, acidand alkali-proof upper layer whichl offers a firm foothold to the animals and which, when laying it, is provided with a molten adhesive substance of the same kind as the upper layer kfor the purpose of producing a homogeneous pavement kwithout joints, a pavement, which, owing to the highly dislnfectin and germ-killing upper layer and the per ect absence of joints, prevents any formation of disease germs and putrefaction.

The accompanying drawing shows a perspective view of a pavement made according to my invention.

The pavement described above is made in blocks, plates or slabs of varying sizes, as may be most 'desirable inany particular case. The substance serving as upper layer for the individual slabs and as uniting adhesive medium for them is made of molten mineral and brown coal bitumen, tar, as-

'phaljtum, the residues of petrol` and suitable enzol derivates, of impregnating oils (creosote and anthracene oil), of disinfecting oils (phenol and crude cresol), while adding crushed natural cork, cork bark, sawdust and,chips of woodwhich are thoroughl mixed in stirring apparatus `and after eing put on top ofthe still hot lower 3.5 slabs areunited with'them byV pressing to one plate or slab.

Thev substances named, like benzfol derlivates, residues of petrol, and tar serve not only as uniting and adhesive media but 0 also as germicides. To intensify their wellknown effect creosote or benzol derivates like carbolic acid etc. may be mixed Iwith, them.

In addition,l the substances mentioned 5 have water-shedding properties and' cause permanent dryness of the pavement.

By unitin cork barks, sawdust and chips 'of wood wit the bituminous molten mass, as described above, a pavement is produced 5. which in practical use gradually becomes rough and perfectl` eliminates the much feared snioothness o aspha1t-like substances with the result that the animals are surefooted when standing or walking. 5v5 Furthermore, the use of these united slabs the method of effects an essential saving in laying the pavement as-compared `with all other kinds of stable pavements put on in layers on the spot or stamped; when laying the latter kinds of stable pavements-expensive .transportations of boilers, kettles, etc. `are neccssary in addition to the cost of laying, while the slabs describe-d `above may be laid by any unskilled person.I

The' rocess of manufacturing my isolating sta le pavement is as follows: at rst impregnated, i. e. water-shedding cork plates vare made which form an isolating lower layer. These cork plates, when'still hot, are united by pressing them with a molten mass of mineral coal bitumen, brown coal bitumen, coal tar pitch, slag-containing brown coal pitch, natural asphalt mastic, tar, petrol residues, creosote and anthracene oil, cresol (carbolic loil), powdered'bark, chips of wood, powdered .cork and crushed cork so as to produce perfectly uniform slabs combining the two layers. It is selfevident that the mass for the upper layer must be previously made ready and tlioroughly mixed in stirring apparatus. Vhen uniting by pressing the cork plates forming the lower layer with the ,mass for the upper layer grooves may be pressed into the latter by using a suitable type of press. Exactly the same mass which forms the upper layer, by varying the quantities of the ingredients added, is worked into a cementing medium which can easily be molten oli-the spot where the slabsjare to be laid and4v put on the adjoining edges of the slabs Thus, by joining the slabs 'togetherafter being treated with the cementing medium a homogeneous pavement without joints is ,produced which is .especially suited for stables, as it is warm, disinfecting, germkilling, watertight,\ watershedding, acidand alkali-proof elastic, absolutely impermeable to humidlty or cold from below, and antiseptic.

I amk aware that prior to my invention pavements have been made which consist of two layers, f. i. of a lower layer or subbed of concrete or artificial stone andan upper layer or wearing surface c i cork waste united to the sub-bed by means of tar or similar cementing media. Bricks or blocks of the material named are also known as is placing these blocks or bricks on a sub-be of cement, while my in` vention. consists in uniting and combining two layers within eacli individual slabor plate,

Having thus described my invention, what claim es new, and desire to secure by Letters Patent, is:

1. A. pavement for stable-Floors herein den scribed, 'and consisting of individuel slabs or plates which constitute a perfect union of two layers viz, of e lower one consisting of e mixture of cork and cementingmedizt vand en u per one containing fine cork pow' der, sew ust, chips of wood, and slag, and, as cementing mediums a mixture of molten mineral andbrown coal bitumen or equivalent covering substentielly es described.

2. A. pavement for steble-fioorsherein deweeen scribed, and. consisting of individuel slabs or pistes which constitute a perfect union of two layers viz, of a lower one consisting of a mixture of cork and cementing medie and an upper one containing fine cork powder, sawdust, chips of Wood, and slag, ands as cementing medium, e mixture of molten mineral and brown coal bitumen or equivalent eovering; and a cementing medium for the'joints of the said slabs or plates consisting of a mixture of fine cork powder, sawdust, chips of wood, slug, molten mineral and brown coul bitumen or equivalent ingredients. v

In testimony whereof l aix my signe-- ture.

EMIL- HARTEL. 

